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Field Biology of Edessa rufomarginata (Hemiptera: Pentatomidae): Phenology, Behavior, and Patterns of Host Plant Use

Texto completo
Autor(es):
Silva, Daniel P. [1] ; Oliveira, Paulo S. [2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Dept Biol Anim, Programa Posgrad Ecol, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Dept Biol Anim, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: ENVIRONMENTAL ENTOMOLOGY; v. 39, n. 6, p. 1903-1910, DEC 2010.
Citações Web of Science: 16
Resumo

Pentatomids may cause direct and indirect damage to important crop plants. Biological and ecological features of phytophagous stink bugs in natural environments, however, remain poorly documented. Here, we provide an ecological account of Edessa rufomarginata De Geer on Caryocar brasiliense (Caryocaraceae) in the Brazilian savanna. The phenology of E. rufamarginata matched that of its host plant, with immatures developing in the wet season simultaneously with the production of vegetative and reproductive plant tissue. Females do not exhibit parental care and lay eggs more frequently on larger plants. Oviposition frequency, however, does not differ between plants with and without flowers/fruits. Nymphs and adults usually feed on stem parts and more rarely on flower buds and fruits. First- and second-instar nymphs remain aggregated, but disperse as third-instar nymphs. Adults and nymphs were more abundant on mature stems of C. brasiliense compared with other plant locations. Ants visiting the plant to search for extrafloral nectar occasionally tap the abdomen of E. rufomarginata nymphs with their antennae to obtain honeydew. This is the first record of trophobiotic interactions between Edessa stinkbugs and ants, and one of the few for heteropterans. The interaction of the stink bug with other natural enemies, such as predaceous Heniartes (Reduviidae), was also observed. Given the pest status of Edessa species for crop plants, additional field studies on host plants, interaction with ants, and natural enemies in native habitats are needed for an effective management of these stink bugs in tropical agricultural systems. (AU)

Processo FAPESP: 08/54058-1 - Ecologia e comportamento de formigas neotropicais
Beneficiário:Paulo Sergio Moreira Carvalho de Oliveira
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 08/52781-8 - Ecologia e comportamento de Edessa rufomarginata (Hemineptera: Pentamidae) em Caryocar brasiliense (Caryocaraceae): um estudo experimental na interface herbívoro-formiga-planta
Beneficiário:Daniel de Paiva Silva
Linha de fomento: Bolsas no Brasil - Mestrado